add reference support

This commit is contained in:
Doug MacEachern 2006-12-31 19:06:03 +00:00
parent e554a35a0e
commit 3e71b0b340
1 changed files with 71 additions and 17 deletions

View File

@ -48,6 +48,7 @@ typedef enum {
} ptql_value_type_t;
#define PTQL_OP_FLAG_PARENT 1
#define PTQL_OP_FLAG_REF 2
struct ptql_parse_branch_t {
char *name;
@ -386,7 +387,8 @@ static int ptql_branch_list_destroy(sigar_t *sigar,
}
if (branch->lookup &&
(branch->lookup->type == PTQL_VALUE_TYPE_STR))
(branch->lookup->type == PTQL_VALUE_TYPE_STR) &&
!(branch->op_flags & PTQL_OP_FLAG_REF))
{
if (branch->value.str) {
free(branch->value.str);
@ -430,6 +432,27 @@ static int ptql_branch_match(ptql_branch_t *branch)
}
}
static int ptql_branch_match_ref(ptql_branch_t *branch, ptql_branch_t *ref)
{
switch (branch->lookup->type) {
case PTQL_VALUE_TYPE_UI64:
return branch->match.ui64(*(sigar_uint64_t *)DATA_PTR(branch),
*(sigar_uint64_t *)DATA_PTR(ref));
case PTQL_VALUE_TYPE_UI32:
return branch->match.ui32(*(sigar_uint32_t *)DATA_PTR(branch),
*(sigar_uint32_t *)DATA_PTR(ref));
case PTQL_VALUE_TYPE_CHR:
return branch->match.chr(*(char *)DATA_PTR(branch),
*(char *)DATA_PTR(ref));
case PTQL_VALUE_TYPE_STR:
case PTQL_VALUE_TYPE_ANY:
return branch->match.str((char *)DATA_PTR(branch),
(char *)DATA_PTR(ref));
default:
return 0;
}
}
enum {
PTQL_PID_PID,
PTQL_PID_FILE,
@ -774,13 +797,17 @@ static int ptql_branch_parse(char *query, ptql_parse_branch_t *branch)
}
static int ptql_branch_add(ptql_parse_branch_t *parsed,
ptql_branch_t *branch)
ptql_branch_list_t *branches)
{
ptql_branch_t *branch;
ptql_entry_t *entry = NULL;
ptql_lookup_t *lookup = NULL;
ptql_op_name_t op;
int i;
int i, is_ref=0;
PTQL_BRANCH_LIST_GROW(branches);
branch = &branches->data[branches->number++];
branch->data = NULL;
branch->data_size = 0;
branch->op_flags = parsed->op_flags;
@ -833,23 +860,48 @@ static int ptql_branch_add(ptql_parse_branch_t *parsed,
return SIGAR_PTQL_MALFORMED_QUERY;
}
if ((*parsed->value == '$') &&
sigar_isdigit(*(parsed->value+1)))
{
is_ref = 1;
branch->op_flags |= PTQL_OP_FLAG_REF;
branch->value.ui32 = atoi(parsed->value+1) - 1;
if (branch->value.ui32 >= branches->number) {
/* out-of-range */
return SIGAR_PTQL_MALFORMED_QUERY;
}
else if (branch->value.ui32 == branches->number-1) {
/* self reference */
return SIGAR_PTQL_MALFORMED_QUERY;
}
}
switch (lookup->type) {
case PTQL_VALUE_TYPE_UI64:
branch->match.ui64 = ptql_op_ui64[op];
if (!is_ref) {
branch->value.ui64 = strtoull(parsed->value, NULL, 10);
}
break;
case PTQL_VALUE_TYPE_UI32:
branch->match.ui32 = ptql_op_ui32[op];
if (!is_ref) {
branch->value.ui32 = strtoul(parsed->value, NULL, 10);
}
break;
case PTQL_VALUE_TYPE_CHR:
branch->match.chr = ptql_op_chr[op];
if (!is_ref) {
branch->value.chr[0] = parsed->value[0];
}
break;
case PTQL_VALUE_TYPE_STR:
case PTQL_VALUE_TYPE_ANY:
branch->match.str = ptql_op_str[op];
if (!is_ref) {
branch->value.str = strdup(parsed->value);
}
break;
}
@ -873,7 +925,7 @@ SIGAR_DECLARE(int) sigar_ptql_query_create(sigar_t *sigar,
char *ptr, *ptql_copy = strdup(ptql);
int status = SIGAR_OK;
sigar_ptql_query_t *query =
*queryp = malloc(sizeof(*queryp));
*queryp = malloc(sizeof(*query));
ptql = ptql_copy;
@ -888,11 +940,8 @@ SIGAR_DECLARE(int) sigar_ptql_query_create(sigar_t *sigar,
status = ptql_branch_parse(ptql, &parsed);
if (status == SIGAR_OK) {
PTQL_BRANCH_LIST_GROW(&query->branches);
status =
ptql_branch_add(&parsed,
&query->branches.data[query->branches.number++]);
ptql_branch_add(&parsed, &query->branches);
if (status != SIGAR_OK) {
break;
@ -916,8 +965,7 @@ SIGAR_DECLARE(int) sigar_ptql_query_create(sigar_t *sigar,
sigar_ptql_query_destroy(sigar, query);
*queryp = NULL;
}
if (query->branches.number > 1) {
else if (query->branches.number > 1) {
qsort(query->branches.data,
query->branches.number,
sizeof(query->branches.data[0]),
@ -972,12 +1020,18 @@ SIGAR_DECLARE(int) sigar_ptql_query_match(sigar_t *sigar,
branch->data = malloc(branch->data_size);
}
status = lookup->get(sigar, pid, branch->data);
if (status != SIGAR_OK) {
return status;
}
if (status == SIGAR_OK) {
matched = ptql_branch_match(branch);
if (branch->op_flags & PTQL_OP_FLAG_REF) {
ptql_branch_t *ref =
&query->branches.data[branch->value.ui32];
matched = ptql_branch_match_ref(branch, ref);
}
else {
matched = 0;
matched = ptql_branch_match(branch);
}
}